Results 41 to 50 of about 3,446,761 (242)

Phase Noise Cancelation Based on Polarization Modulation for Massive MIMO-OFDM Systems

open access: yesInternational Journal of Antennas and Propagation, 2019
In massive multiple-input multiple-output (MIMO) systems, phase noise introduced by oscillators can cause severe performance loss. It leads to common phase error and intercarrier interference in massive MIMO-OFDM uplink. To solve the issue, a novel phase
Yao Nie   +5 more
doaj   +1 more source

Cutset Bounds on the Capacity of MIMO Relay Channels

open access: yesIEEE Access, 2017
We analyze the ergodic capacity of multiple-input multiple-output (MIMO) Rayleigh-fading relay channels. We first derive the probability density function of a sum of independent complex central Wishart matrices-called the central hyper-Wishart matrix-and
Youngmin Jeong   +2 more
doaj   +1 more source

Ergodic Capacity Analysis of Remote Radio Head Associations in Cloud Radio Access Networks

open access: yes, 2014
Characterizing user to Remote Radio Head (RRH) association strategies in cloud radio access networks (C-RANs) is critical for performance optimization.
Peng, Mugen, Poor, H. Vincent, Yan, Shi
core   +1 more source

Free Deterministic Equivalents for the Analysis of MIMO Multiple Access Channel [PDF]

open access: yes, 2016
In this paper, a free deterministic equivalent is proposed for the capacity analysis of the multi-input multi-output (MIMO) multiple access channel (MAC) with a more general channel model compared to previous works. Specifically, a MIMO MAC with one base
Gao, Xiqi, Lu, An-An, Xiao, Chengshan
core   +3 more sources

Performance Analysis of Ergodic Rate and Effective Capacity for RIS-Assisted NOMA Networks Over Nakagami-m Fading Environments

open access: yesIEEE Access
Massive connectivity and green communication will be important problems for the upcoming sixth generation (6G). Reconfigurable intelligent surfaces (RIS) and non-orthogonal multiple access (NOMA) have recently been presented as two major solutions to ...
Tran Cong Hung   +5 more
doaj   +1 more source

Almost universal codes for fading wiretap channels

open access: yes, 2016
We consider a fading wiretap channel model where the transmitter has only statistical channel state information, and the legitimate receiver and eavesdropper have perfect channel state information.
Ling, Cong   +2 more
core   +4 more sources

Ergodic Fading Interference Channels: Sum-Capacity and Separability [PDF]

open access: yesIEEE Transactions on Information Theory, 2011
The sum-capacity for specific sub-classes of ergodic fading Gaussian two-user interference channels (IFCs) is developed under the assumption of perfect channel state information at all transmitters and receivers. For the sub-classes of uniformly strong (every fading state is strong) and ergodic very strong two-sided IFCs (a mix of strong and weak ...
Sankar, Lalitha   +3 more
openaire   +2 more sources

Ergodic Classical-Quantum Channels: Structure and Coding Theorems

open access: yes, 2008
We consider ergodic causal classical-quantum channels (cq-channels) which additionally have a decaying input memory. In the first part we develop some structural properties of ergodic cq-channels and provide equivalent conditions for ergodicity.
Bjelakovic, Igor, Boche, Holger
core   +2 more sources

Performance Analysis of Beamforming in MU-MIMO Systems for Rayleigh Fading Channels

open access: yesIEEE Access, 2017
This paper characterizes the performance metrics of MU-MIMO systems under Rayleigh fading channels in the presence of both cochannel interference and additive noise with unknown channel state information and known correlation matrices. In the first task,
Ahmad Kamal Hassan   +3 more
doaj   +1 more source

Downlink ergodic sum capacity maximisation for massive distributed antenna systems with SWIPT protocol

open access: yesIET Communications, 2021
The paper investigates simultaneous wireless information and power transfer (SWIPT) in massive distributed antenna systems, where the remote radio heads (RRH) equipped with a large number of antennas are arbitrarily distributed over the coverage area and
Wenfeng Sun   +4 more
doaj   +1 more source

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